Rumors abound; Lifesaver or Bitch
I believe strongly that a 15 year old is not, by any way, old enough nor mature to babysit for a week.
I am of the opinion that a parent/guardian, as much as possible, should be on the premises (the home) for the majority of the day.
By parent/guardian, I mean an 18-year old or older AND, at least, intelligent enough to make mature decisions.
Examples:
A 15-year old watching the siblings while parent/s are at work seems reasonable (since the parent would ALWAYS be accessible).
A 15-year old watching the siblings for a week while the parent/s are not reachable is SHOCKING!
Conclusion:
Now, if this is true, Kalista, word will definitely get around. You might be unpopular or others might be suspicious of why you're hanging around. Just be yourself, Kalista, and who cares what people think?
You were right. You made a responsible decision when the boys and their grandmother could not.
No one could say that you did not care. Many can say the parents didn't.
(Please let me know what happens when they return!)